Answer :
Sure! Let's go through each genetic cross step-by-step:
1. First Cross: Heterozygous Male (Ww) with Homozygous Recessive Female (ww)
- The male has the alleles W and w.
- The female has two w alleles.
| Parent Alleles | W | w |
|----------------|----|----|
| w | Ww | ww |
| w | Ww | ww |
- From this table, we can see the possible genotypes of the offspring:
- Ww
- Ww
- ww
- ww
- Out of these four possibilities:
- 2 are heterozygous (Ww)
- 2 are homozygous recessive (ww)
- Therefore, the chance of the offspring being heterozygous (Ww) is 2 out of the 4, or 0.5 (50%).
2. Second Cross: Heterozygous (Ww) with Homozygous Dominant (WW)
- One parent is heterozygous (Ww).
- The other parent is homozygous dominant (WW).
| Parent Alleles | W | w |
|----------------|----|----|
| W | WW | Ww |
| W | WW | Ww |
- From this table, we can see the possible genotypes of the offspring:
- WW
- WW
- Ww
- Ww
- All offspring will either be homozygous dominant (WW) or heterozygous (Ww).
- There are no homozygous recessive (ww) offspring in this cross.
- Therefore, the probability of having a homozygous recessive (ww) offspring is 0 out of the 4, or 0.0 (0%).
These explanations show how the results are obtained for each genetic cross.
1. First Cross: Heterozygous Male (Ww) with Homozygous Recessive Female (ww)
- The male has the alleles W and w.
- The female has two w alleles.
| Parent Alleles | W | w |
|----------------|----|----|
| w | Ww | ww |
| w | Ww | ww |
- From this table, we can see the possible genotypes of the offspring:
- Ww
- Ww
- ww
- ww
- Out of these four possibilities:
- 2 are heterozygous (Ww)
- 2 are homozygous recessive (ww)
- Therefore, the chance of the offspring being heterozygous (Ww) is 2 out of the 4, or 0.5 (50%).
2. Second Cross: Heterozygous (Ww) with Homozygous Dominant (WW)
- One parent is heterozygous (Ww).
- The other parent is homozygous dominant (WW).
| Parent Alleles | W | w |
|----------------|----|----|
| W | WW | Ww |
| W | WW | Ww |
- From this table, we can see the possible genotypes of the offspring:
- WW
- WW
- Ww
- Ww
- All offspring will either be homozygous dominant (WW) or heterozygous (Ww).
- There are no homozygous recessive (ww) offspring in this cross.
- Therefore, the probability of having a homozygous recessive (ww) offspring is 0 out of the 4, or 0.0 (0%).
These explanations show how the results are obtained for each genetic cross.